HCFC2 is needed for IRF1- and IRF2-dependent Tlr3 transcription and for survival during viral infections

  • Lei Sun
  • , Zhengfan Jiang
  • , Victoria A. Acosta-Rodriguez
  • , Michael Berger
  • , Xin Du
  • , Jin Huk Choi
  • , Jianhui Wang
  • , Kuan wen Wang
  • , Gokhul K. Kilaru
  • , Jennifer A. Mohawk
  • , Jiexia Quan
  • , Lindsay Scott
  • , Sara Hildebrand
  • , Xiaohong Li
  • , Miao Tang
  • , Xiaoming Zhan
  • , Anne R. Murray
  • , Diantha La Vine
  • , Eva Marie Y. Moresco
  • , Joseph S. Takahashi
  • Bruce Beutler*
*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Transcriptional regulation of numerous interferon-regulated genes, including Toll-like receptor 3 (Tlr3), which encodes an innate immune sensor of viral double-stranded RNA, depends on the interferon regulatory factor 1 (IRF1) and IRF2 transcription factors. We detected specific abrogation of macrophage responses to polyinosinic-polycytidylic acid (poly(I:C)) resulting from three independent N-ethyl-N-nitrosourea-induced mutations in host cell factor C2 (Hcfc2). Hcfc2 mutations compromised survival during influenza virus and herpes simplex virus 1 infections. HCFC2 promoted the binding of IRF1 and IRF2 to the Tlr3 promoter, without which inflammatory cytokine and type I IFN responses to the double-stranded RNA analogue poly(I:C) are reduced in mouse macrophages. HCFC2 was also necessary for the transcription of a large subset of other IRF2-dependent interferon-regulated genes. Deleterious mutations of Hcfc2 may therefore increase susceptibility to diverse infectious diseases.

Original languageEnglish
Pages (from-to)3263-3277
Number of pages15
JournalJournal of Experimental Medicine
Volume214
Issue number11
DOIs
StatePublished - 1 Nov 2017

Bibliographical note

Publisher Copyright:
© 2017 Sun et al.

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